<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <title>这是一个title</title>
</head>
<body><h1>html标题</h1>
<h2>123213</h2></body>
</html>